Suicide death rates among 10- to 19-year-old girls have been systematically underestimated, while rates among boys have been overestimated, according to the report published Sept. 13 in JAMA Network Open.

While preliminary tests found low levels of the nitrosamine impurity N-nitrosodimethylamine (NDMA) in some ranitidine products, the FDA said this does not mean patients taking the drugs should stop using them now.